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      <a id="vlowres"></a>
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        <h2>
          <span class="refentrytitle">vlowres</span>
        </h2>
        <p>vlowres — 
      A bank of filters in which the cutoff frequency can be separated under user control.
          </p>
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      <div class="refsect1">
        <a id="idp164663360"></a>
        <h2>Description</h2>
        <p>
      A bank of filters in which the cutoff frequency can be separated under user control
    </p>
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      <div class="refsect1">
        <a id="idp164664784"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">ares <span class="command"><strong>vlowres</strong></span> asig, kfco, kres, iord, ksep</pre>
      </div>
      <div class="refsect1">
        <a id="idp164666928"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>iord</em></span> -- total number of filters (1 to 10)
    </p>
      </div>
      <div class="refsect1">
        <a id="idp164668656"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>asig</em></span> -- input signal
    </p>
        <p>
      <span class="emphasis"><em>kfco</em></span> -- frequency cutoff (not in Hz)
    </p>
        <p>
      <span class="emphasis"><em>kres</em></span> -- resonance amount
    </p>
        <p>
      <span class="emphasis"><em>ksep</em></span> -- frequency cutoff separation for each filter: the first filter has a kfreq cutoff, the second has a kfreq + ksep and the third  kfreq + 2*ksep and so on, depending on the number of filters.
    </p>
        <p>
      <span class="emphasis"><em>vlowres</em></span> (variable resonant lowpass filter) allows a variable response curve in resonant filters. It can be thought of as a bank of lowpass resonant filters, each with the same resonance, serially connected. The frequency cutoff of each filter can vary with the <span class="emphasis"><em>kcfo</em></span> and <span class="emphasis"><em>ksep</em></span> parameters.
    </p>
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      <div class="refsect1">
        <a id="idp164675440"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the vlowres opcode. It uses the file <a class="ulink" href="examples/vlowres.csd" target="_top"><em class="citetitle">vlowres.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp164677216"></a>
          <p class="title">
            <strong>Example 1005. Example of the vlowres opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac     <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if RT audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o vlowres.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1


<span class="oblock">instr</span> 1

kamp <span class="opc">init</span> p4
asig <span class="opc">vco2</span>  kamp, 110			<span class="comment">;saw wave</span>
kfco <span class="opc">line</span> 30, p3, 300			<span class="comment">;vary the cutoff frequency from 30 to 300 Hz.</span>
kres <span class="op">=</span> 20	
ksep <span class="op">=</span> p5				<span class="comment">;different resonance values</span>
iord <span class="op">=</span> p6				<span class="comment">;and different number of filters</span>
aout <span class="opc">vlowres</span> asig, kfco, kres, iord, ksep
aclp <span class="opc">clip</span> aout, 1, 1			<span class="comment">;avoid distortion</span>
     <span class="opc">outs</span> aclp, aclp
     
<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>
<span class="stamnt">f</span> 1 0 16384 10 1	<span class="comment">;sine</span>

<span class="stamnt">s</span>
<span class="stamnt">i</span> 1 0 10 .1 5  2	<span class="comment">;compensate volume and </span>
<span class="stamnt">i</span> 1 + 10 .1 25 2	<span class="comment">;number of filters = 2</span>
<span class="stamnt">s</span>
<span class="stamnt">i</span> 1 0 10 .01 5  6	<span class="comment">;compensate volume and </span>
<span class="stamnt">i</span> 1 + 10 .04 15 6	<span class="comment">;number of filters = 6</span>

<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp164681504"></a>
        <h2>Credits</h2>
        <p>
      </p>
        <table border="0" summary="Simple list" class="simplelist">
          <tr>
            <td>Author: Gabriel Maldonado</td>
          </tr>
          <tr>
            <td>Italy</td>
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        <p>
    </p>
        <p>New in Csound version 3.49</p>
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